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Journal of Chinese
            Architecture and Urbanism                                           Style evolution rules of Tibetan dwellings
























            Figure 3. Aerial view of an original village at the Jiuzhaigou World Heritage
            Site. Source: Photo from Jiuzhaigou Valley Administration Bureau
                                                               Figure  5.  A  modern dwelling at the Jiuzhaigou World Heritage Site.
                                                               Source: Photo by the authors

                                                               set as variants. Then, considering that the characteristics
                                                               of dwellings are mainly reflected in the three aspects
                                                               of the building plan, structure, and constitution, and
                                                               based on the criteria of being reasonable, holistic, easy to
                                                               calculate, and realistic, a quantitative analysis framework
                                                               was constructed, which consisted of three categories:
                                                               building plan, structure, and constitution, as shown in
                                                               Table 2 (Qujijiancaim, 2009). Each category included
                                                               landmark indicators and characteristic calculation
                                                               indicators, from “type” to “indicator,” i.e., from geometry
                                                               to quantitative analysis, which would help to analyze and
            Figure 4. A traditional dwelling at the Jiuzhaigou World Heritage Site.   study the evolution of the residential landscape in a more
            Source: Photo from Jiuzhaigou Valley Administration Bureau  intuitive way. The change in the way of living is reflected
                                                               in the functional changes in the layout of the dwellings,
            compiled. To study the development history and pattern   and the proportion of functional spaces (P) can visually
            of Tibetan dwellings in Jiuzhaigou, the follow-up team   demonstrate this change (Lu, 2007). Space, as an objective
            collated the field research data and classified the types of   form of material existence, is expressed in terms of length,
            dwellings into traditional, partially renovated A, partially   width, and height, and the form ratio W: D:H, of which
            renovated B, and modern, according to their different   they are composed can reflect the change in the form of the
            characteristics in terms of the building plan, structure, and   dwelling’s appearance. The material of rammed earth is one
            construction. This classification resulted in 20 traditional,   of the characteristic materials of dwellings in Jiuzhaigou,
            75 partially reconstructed A, 152 partially reconstructed B,   compared to other Tibetan areas, and its proportion of the
            and 73 modern dwellings in the study sample (Figure 6).  front façade area (M), together with the window-to-wall
                                                               ratio, can reflect the richness of the façade (Xu et al., 2019).
            2.3. Analysis methods                              Finally, the technical drawings of the dwellings were drawn
            The  architectural  typology considers that building types   in AutoCAD 2022, and the data were visualized in Excel,
            reflect the evolution of entities and that there is a certain   Auto Illustrator 2022, and Origin 2022.
            “origin” for all types in history, called the “leading type”
            (Canigia, 1979). This study simplified this “reading” of   3. Analysis
            the evolution of building types into a “prototype-variant”   3.1. Analysis of architectural features of different
            approach. First, based on the four types of dwellings, one   styles
            dwelling of each type in good condition was selected as a
            sample for further study, making a total of four dwellings,   3.1.1. Traditional dwellings
            as shown in  Table 1. Second, one type of dwelling was   Traditional dwellings, built before the opening of the scenic
            set as the prototype, and the other three categories were   area in 1984, have a history of more than 60 years (Figure 7).


            Volume 5 Issue 2 (2023)                         4                        https://doi.org/10.36922/jcau.0880
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